The Telegraph: Sunscreen and SPF 100

the telegraphThe Telegraph published a comprehensive feature about sun protection including advice from sun exposure, mole and skin expert Dr Ross Perry.

The feature was entitled:

“Everything you need to know about sunscreen (including the truth about SPF 100)”

How Sunscreen Works

The article sought expert input from Dr Ross Perry on how sunscreen works. Key points:

  • Sunscreen works to stop the sun’s rays from penetrating into the skin
  • SPF stands for sun protection factor
  • Higher SPF means greater protection

Dr Perry explained

“There’s always confusion about SPF numbers in terms of how much protection it gives.

“The measurements are best explained by how much sun they let through.

“There’s actually not that much difference between a 30 and 50. A 30 will give you 96% protection versus the sun, while factor 50 will give you 98%. Factor 100 will give you 99% protection.”

This could be interpreted that SPF 100 provides little extra protection over and above SPF 50 for most people.

The Telegraph suggests:

“For most, SPF 30-50 is normally considered sufficient, depending on your skin type (the fairer the higher) and how strong the sun is.

“But there’s another factor to consider: application. Dermatologists will often suggest that applying factor 30 liberally is better than a thin layer of 100.”

How To Apply Sunscreen

Dr Perry says:

“The main thing is regular and bountiful application. People try to cut corners, to not get burnt but get a bit of a tan, so they hedge their bets a little. Putting it on too infrequently or in too little quantities runs the risk of getting burnt.”

According to research, many people use less than half the recommended amount so won’t be getting the full protection.

Dr Perry gave some advice on how to apply sunscreen:

  • Apply around 15 minutes before going outside
  • Top-up as required. If you are in direct sun all day, sweating and swimming, then top up every couple of hours and straight after swimming. If it’s not particularly hot and you’re in the sun a shorter time, then once a day may be enough
  • Put sunscreen on any part of the face or body that is exposed to the sun
  • You still need sunscreen in the shade due to reflection of UV rays
  • You still need sunscreen on a cloudy day as UV rays can penetrate cloud. Dr Perry says:

    “It can be deceptive,” says Dr Ross. “On a cloudy day, certainly if it’s warm, you should apply it, though not necessarily as liberally.

Expert Tips

Ross added his personal advice on applying suncream:

“…when applying to the face, it’s worthwhile to wipe down your eyebrows, otherwise it runs into the eyes, which causes irritation, particularly with children. You may also want to put on some moisturiser before, so it sits on the skin better.”

Read this article in full

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Dr Ross Perry

doctor ross perry

Dr Ross Perry regularly provides expert comment and advises the media on a range of skincare and health-related issues.

He has particular expertise in skin surgery mole removal and melanoma; having removed thousands of moles in his career, both within the NHS and privately through Cosmedics Skin Clinics. He provides expert advice on skin cancer, sun damage and sun protection for a variety of UK media and publications.

He is also highly experienced in non-surgical cosmetic and medical treatments such as BOTOX® and dermal fillers, where he has a reputation for excellent results that look entirely natural.


Cosmedics Skin Clinics

Cosmedics Skin Clinics was established in 2003 and has built up an excellent reputation for cosmetic and medical treatments, carried out by GMC Registered Doctors.  The company offer a full range of cosmetic treatments, including popular lip enhancement and wrinkle relaxing injections, dermal fillers; plus medical treatments including mole removal, thread vein treatment and excessive sweating injections.

Cosmedics Skin Clinics was has a team of skin treatment doctors and surgeons in their 5 skin clinics across London and Bristol led by Dr Ross Perry.

Call 020 7386 0464 or email to book an appointment.


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